Yknow, NPR says that there's no reason to freak out about Ebola because there are CDC trained workers at all of the airports in west Africa in Liberia, Nigeria, Siera Leone, Ivory Coast, etc... screening everyone for fever before they get on planes, and pulling them out if they are sick. So that's why they say this patient 0 was not sick (and therefore not infectious) before he landed in Texas.
This argument would be so much more reassuring for me personally if I hadn't once successfully bribed an airport official not to get a yellow fever vaccine (needles from public officials in sub-Saharan Africa? No thank you, I'm sure it's a new needle...) and then on a later trip got on a plane while sick with a fever so I wouldn't have to ride out whatever it was, sick while in Ivory Coast. And I don't think there is any real reason to panic, but I gotta say, their overconfidence on this actually makes me think they are naive about what they are working with.